ChemSpider: The Free Chemical Database

Ayers, Meredith

doi:10.1108/09504121211271059

Cited by 23 publications

(8 citation statements)

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“…The goal of this review was to systematically evaluate the stevia effects on hypertension to provide insights into metabolic syndrome. The structural representation of steviol as the main building block of stevia besides its known herbal leaf was displayed in Figure 1 [47,48]. To approach the goal of this systematic review work, the stevia effects on hypertension were reviewed based on the original research publication of the following electronic databases: Web of Science, Scopus, and PubMed, from 2010 to June 2022.…”

Section: Methodsmentioning

confidence: 99%

Untitled

2023

J. Med. Chem. Sci.

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Section: Methodsmentioning

confidence: 99%

Untitled

2023

J. Med. Chem. Sci.

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“…After completion, the amorphous cell was created. In this study, the density of CO 2 , N -ETFOSA, and N , N , N ′-TM-1,3-PDA is used as 0.001836, 1.7, and 0.793 g/cm 3 , respectively. The loading used for CO 2 , Sc-CO 2 , N -ETFOSA, and N , N , N ′-TM-1,3-PDA is 100, 100, and 10.…”

Section: Methodsmentioning

confidence: 99%

Effects of a Viscoelastic Surfactant on Supercritical Carbon Dioxide Thickening for Gas Shale Fracturing

et al. 2021

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Among waterless fracturing fluids, supercritical carbon dioxide (Sc-CO 2 ) has been increasingly emphasized in recent years for hydrocarbon recovery from shale. Sc-CO 2 is the most feasible choice to be an alternative to conventional hydraulic fracturing with the ability to alleviate global warming. However, Sc-CO 2 fracturing is encumbered with problems such as poor proppant-carrying capacity, easy sand plugging, large displacement, and high frictional resistance. The main aim of this study is to investigate the thickening of Sc-CO 2 by adding viscoelastic surfactants (VESs) for increasing the proppant-carrying capacity and to understand the preferential adsorption of this thickened Sc-CO 2 over methane on a heterogeneous molecular shale model. From the literature, it was found that a fluorinated polymer provides good CO 2 solubility and also thickens CO 2 . As a result, fluorinated VES, N-ethyl perfluorooctyl sulfonamide (N-ETFOSA), and nonfluorinated VES, N,N,N′-trimethyl-1,3-propanediamine (N,N,N′-TM-1,3-PDA), were used in this study for comparison. The molecular simulation of thickening Sc-CO 2 employing N-ETFOSA and N,N,N′-TM-1,3-PDA was carried out at a temperature and pressure ranging from 298 to 305 K and 100 to 7400 kPa, respectively. Although N,N,N′-TM-1,3-PDA shows better solubility in Sc-CO 2 than N-ETFOSA, both of them cause an increase in the viscosity of Sc-CO 2 by 36 and 156 times, respectively, than its actual viscosity. Adsorption simulations of CO 2 -thickened Sc-CO 2 and methane (CH 4 ) were performed on a heterogeneous molecular shale model. With increasing pressure at a constant temperature, N-ETFOSA-thickened Sc-CO 2 showed better adsorption capacity on the molecular shale model than others. Accordingly, at higher pressure, N-ETFOSA-thickened Sc-CO 2 shows better selectivity over methane. The results of viscosity and adsorption simulations have been validated by literature experiments. Nonetheless, these outstanding simulation findings need more experimental backup to pave their implementation on real field scenarios. Thus, this study helps establish a theoretical ground for the optimization of shale gas extraction from shale plays and makes it viable storage for CO 2 sequestration.

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“…For tentative identification, a consensus molecular formula was assigned to each molecular feature based on exact mass data and isotopic pattern distributions for the precursor using MetaboScape 4.0 and Sirius v4 (Dührkop et al, 2019) software. Molecular formula was used to perform identification analysis on publicly available databases: Pub-Chem (Kim et al, 2019), MassBank (Horai et al, 2010), Kyoto Encyclopedia of Genes and Genomes (KEGG) (Kanehisa et al, 2016), KNApSAcK (Afendi et al, 2012), Metlin (Guijas et al, 2018), and Chemspider (Ayers, 2012). When available, the ms/ms fragmentation spectrum of reference compounds identified on databases was compared to that obtained experimentally (Table 2).…”

Section: Metabolomic Analysismentioning

confidence: 99%